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What to do when Mac Sound Not Working?

Mac sound not working” issue can come up because of glitch on the audio software or some other issues also. There can be several reasons for which you can get this problem. Some of the common causes are when the correct audio device is not chosen by the Mac. If the data inside the NVRAM/PRAM gets corrupt. Further, you can encounter this problem if there is some corruption on the sound controller when the settings of the sound are not correctly set. In the next section, we will provide you the solutions to resolve this issue.

Solutions to Eradicate the Problem Mac Sound not Working

In this section of the article, you will get various points that will help to resolve this issue very quickly.

Examine the Volume of the Mac

This is one of the easiest solutions that will help you to get rid of this error. Sometimes, you may not get sound on the Mac, if you have mistakenly hit the ‘Mute’ key present on the keyboard. So, first of all, look at the icon and if it is muted then, hit the ‘Mute’ once again to unmute the sound. Now, if the sound is very less on your Mac, and it is the reason due to which you are unable to hear anything, then press the ‘Volume Up’ key to increase the sound. Even, you can adjust the volume by clicking the ‘Speaker’ icon on the topmost bar of the screen. Further, even after performing all the steps if you still cannot hear anything, then see if on the audio output port there is any headphone present or not.

Perform a Normal Reboot of Mac

Another easy solution to eliminate the Mac sound not working problem is to normally boot the Mac computer. To do that, follow the steps underneath.

  1. First, tap on the ‘Power’ button or click on the button ‘Control + Eject’ simultaneously. This will launch a dialog box, where a tap on the button ‘Restart’.
  2. There is a second way to restart. For that, navigate to the ‘Apple’ logo on the upper left corner of the desktop. After that, click on it to reveal the options menu. Next, from that menu, locate and choose the option ‘Restart’.
  3. The last way is to simultaneously hit on the three buttons ‘Control + Command + Eject’, in order to reboot the Mac.

Select the Correct Audio Device

When you insert a new headphone or some other audio device into the Mac, then due to some internal glitch you can confront this problem. This basically means that Mac chooses some other device instead of the one which is currently installed. The solution to correct this problem is to manually select the audio device. To perform that you have to follow the step-by-step procedure underneath.

  1. First, locate and then choose the Apple menu situated on the upper left corner of the screen.
  2. After that, from the popup options list that comes up, select the option ‘System Preferences’. This will launch a new window that has a similar name as the option you chose on the previous line.
  3. On this window, all the settings of the machine are present on the list. From that list locate and choose the option ‘Sound’.
  4. Now, a new window pops up with a similar name as the option chosen on the last step. Within this window, choose the tab ‘Output’.
  5. Then, from the list with all the output device installed on Mac, select the correct audio output device for the sound.
  6. If you see the audio output device which you want to select has been selected already and even then also, there is no sound, then choose some other device from the list first. Then, choose the audio output device that you want.

Set the PRAM/NVRAM on the Mac

On Mac ‘PRAM/NVRAM’ or ‘parameter random access memory/non-volatile random access memory’ is a memory module that can store instructions related to settings of the computer. Some of the information that it stores are volume, date and time, mouse settings, etc. Now, when the settings of the sound or volume get disrupted due to some problem, then no sound Mac error can crop up. The solution to correct this glitch is to perform a simple reset of these memory modules. Follow the steps beneath, to do it.

  1. First, press the ‘Power’ button to shut down Mac.
  2. Next, once again tap the ‘Power’ button to start up the machine. Now, before anything comes on the screen, tap on the combination of following keys ‘Command + Option + P + R’ simultaneously.
  3. Keep on holding those four keys until the Mac boots up once again with a startup sound.
  4. Once the above process is complete and the desktop appears, let go of those keys.

When you see all the settings are gone after the restart, then according to your preference configure all of them.

Once Again Set the Core Audio

If the previous point on resetting the PRAM cannot able to eradicate the sound problem on your Mac, then there is another way. You can reset the ‘Core Audio’ API (Application Programming Interface). In order to reset the audio interface of the Mac, follow the below-mentioned sentences.

  1. First, tap on both the ‘Command + Spacebar’ keys simultaneously to open the ‘Spotlight’.
  2. After that, within the ‘Spotlight’ type “terminal” and then tap on the ‘Enter’ key. Now, from the search output, double-click on the ‘Terminal’ option to launch the application.
  3. On the ‘Terminal’ window, input the command “sudo killall coreaudiod”, and then tap on the ‘Enter’ key to run it.
  4. When the execution of the command is over or complete, then the ‘CoreAudio’ API is reset.
  5. At last, examine the sound of Mac and be sure that it works correctly or not.

Procedure to Update the MacOS

If you get the Mac sound not working issue even after applying all the points presented above, then the only feasible solution left is to update the MacOS. Follow the steps beneath to do it.

  • In order to update the Operating System manually follow the sub-steps below:
    1. First, locate the ‘Apple Logo’ on the top left corner and tap it to launch the options menu.
    2. From the several options within that menu, choose the ‘System Preferences’ option. After that, from the new window that comes up, choose the ‘Software Update’.
    3. Now, the system will download the update and install it automatically. This would take some time to get over.
  • The process to automatically update the operating system of Mac are as followed:
    1. Follow the first two sub-steps under the above step.
    2. Next, within the window ‘Software Update’ window, choose the option ‘Automatically keep my Mac up to date’. This option helps to install the updates for MacOS automatically.
    3. Now, in order to see more options on the update, select the ‘Advanced’ button. Under this option ‘Advanced’ choose any one option out of several others – ‘Check for updates’, ‘Download new updates when available’, ‘Install macOS updates’, ‘Install app updates from the App Store’ and ‘Install system files data files and security updates’.
    4. Finally, tap on the ‘OK’ button.


Following any points on the previous section can help to resolve the issue on Mac sound not working. Now, after following all the steps of every point given on the above section and still, you are unable to correct this error, then do not panic. Provide the details of the problem that you have encountered on the comment section, that is present at the bottom of this page.